Malicious PDF — malware analysis report

Static analysis result for SHA-256 aede8d716c46b653…

MALICIOUS

PDF

102.0 KB Created: 2020-11-19 02:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 12ea4f91cd835a6312d818fcb0a71d05 SHA-1: f7f046cc0783abac7083b8a6c0bc13cc6ac6cdec SHA-256: aede8d716c46b653bc75404275e1a78fe983b2f6b3820017f95ba4b7b42e3553
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' and another flagging an external URI to 'traffset.ru'. The presence of a 'Visual download / call-to-action button lure' heuristic further suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to direct users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffset.ru/123?utm_term=acurite+weather+station+manual+00592tx PDF link annotation
    • https://ladeletoleworuw.weebly.com/uploads/1/3/4/7/134712388/botawoseviwo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/intellect_devourer_5e_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/tv_guide_chicago_il.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/craigslist_vacation_rentals_naples_fl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0740a79-3006-4d9b-b162-b06dd0725cda/mewibise.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/55033872672.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/tales_of_terror_house_on_the_hill.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/77668309323.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/18931153624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c81607-4e05-4ec5-814a-87e46f72d81a/14772414815.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/wofog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f914122-0163-4893-95ef-1d056bee3e4a/95415219461.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/wefepiziremapawonifi.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/eternal_love_piano_sheet_music.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00016c21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16C21 18832 bytes
SHA-256: da4422c5c28a89cec08fd5083a1fcb9f150b64dd4a193cf9e72d62a7cc6ce9f5
font_00_sfnt_off00012f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F05 5740 bytes
SHA-256: 3fee01b17d3f2e1f1e110b709314ae899e312f927739aac472562a57671ed8cd
font_01_sfnt_off0001427f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1427F 12372 bytes
SHA-256: e175465a1cadf3f0d94c702191664b027ce4f72bafdabf0800ed51157bf48c99

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